# Print a specific line of file(s).
emulate -L zsh

if [ $# -lt 2 ] ; then
    print "Usage: linenr <number>[,<number>] <file>" ; return 1
elif [ $# -eq 2 ] ; then
    local number=$1
    local file=$2
    command ed -s $file <<< "${number}n"
else
    local number=$1
    shift
    for file in "$@" ; do
        if [ ! -d $file ] ; then
            echo "${file}:"
            command ed -s $file <<< "${number}n" 2> /dev/null
        else
            continue
        fi
    done | less
fi